const mysql = require("mysql");

var con = mysql.createConnection({
    host:'192.168.168.144',
    port:'3306',
    user:'root',
    password:'ddd',
    database:'mydatabase'
})

var userName=process.argv[2];
var age =process.argv[3];
var updateSql="update users set age=? where userName=?";

con.query(updateSql,[age,userName],(err,result)=>{
    if(err){
        console.log(err);
    }
    else{
        console.log(result);
    }
})